Shikaku

Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

Video Tutorial

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This Month
1.	qobi	00:07.42
2.	GeorgPfleger	00:07.58
3.	Eskimosnake	00:07.63
4.	SirDiscalot	00:07.68
5.	Goomy	00:08.62
6.	gh	00:08.69
7.	egosi	00:09.01
8.	syucream	00:09.41
9.	HDXX123456789	00:10.60
10.	Michail	00:11.18
11.	Rinno	00:12.18
12.	prinsed	00:12.46
13.	BpbjsGreen	00:13.05
14.	廖得然	00:13.36
15.	NNU未央	00:13.69
16.	Medved	00:14.34
17.	zhanglin1982	00:14.65
18.	Matheart	00:15.16
19.	DR-80	00:15.72
20.	choi123	00:16.17

This Week
1.	gh	00:08.69
2.	egosi	00:09.01
3.	GeorgPfleger	00:09.89
4.	HDXX123456789	00:10.60
5.	Rinno	00:12.18
6.	廖得然	00:13.36
7.	Michail	00:13.46
8.	NNU未央	00:13.69
9.	Medved	00:17.36
10.	abandon777	00:19.06
11.	WNRpingujoy	00:19.65
12.	siaalove	00:20.29
13.	IzAlexandre2	00:20.49
14.	Kcirderf	00:23.23
15.	RavenSandcastle	00:24.85
16.	Taco1717	00:30.83
17.	AnupGupta	00:31.16
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

Today
1.	gh	00:10.45
2.	GeorgPfleger	00:11.87
3.	Rinno	00:12.18
4.	Michail	00:18.38
5.	RavenSandcastle	00:24.85
6.	Taco1717	00:30.83
7.	--- empty ---	--:--
8.	--- empty ---	--:--
9.	--- empty ---	--:--
10.	--- empty ---	--:--
11.	--- empty ---	--:--
12.	--- empty ---	--:--
13.	--- empty ---	--:--
14.	--- empty ---	--:--
15.	--- empty ---	--:--
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

MO3
1.	zahhydude1	00:03.48
2.	vowels	00:03.81
3.	demian2	00:04.66
4.	BingBongBob	00:05.15
5.	numbrr	00:05.20
6.	nabi	00:05.27
7.	Vicellen	00:05.33
7.	coolcoolguy65	00:05.33
9.	mtanzer	00:05.34
10.	bearn	00:05.38

AO5
1.	zahhydude1	00:03.76
2.	vowels	00:03.88
3.	demian2	00:04.92
4.	numbrr	00:05.32
5.	BingBongBob	00:05.39
6.	nabi	00:05.41
7.	bearn	00:05.55
8.	Vicellen	00:05.69
9.	coolcoolguy65	00:06.01
10.	JZE	00:06.09

AO12
1.	zahhydude1	00:04.54
2.	vowels	00:04.91
3.	BingBongBob	00:05.84
4.	numbrr	00:06.26
5.	demian2	00:06.31
6.	bearn	00:06.41
7.	coolcoolguy65	00:06.66
8.	Vicellen	00:06.74
9.	nabi	00:06.91
10.	Vicell	00:07.26

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	Charlie Li	00:00.207
3.	Paul Bismuth	00:01.692

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-03-28 14:35:08

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